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Andrew Cooper 68d757df8d x86/pv: Options to disable and/or compile out 32bit PV support 
This is the start of some performance and security-hardening improvements,
based on the fact that 32bit PV guests are few and far between these days.

Ring1 is full of architectural corner cases, such as counting as supervisor
from a paging point of view.  This accounts for a substantial performance hit
on processors from the last 8 years (adjusting SMEP/SMAP on every privilege
transition), and the gap is only going to get bigger with new hardware
features.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Wei Liu <wl@xen.org>
Reviewed-by: Roger Pau Monné <roger.pau@citrix.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
2020-04-29 21:13:00 +01:00
..
arm
xen/arm: Configure early printk via Kconfig
2020-04-01 10:49:33 +01:00
xen-makefiles
xen/build: introduce if_changed and if_changed_rule
2020-04-24 15:01:11 +02:00
9pfs.pandoc
docs etc.: https: Fix references to other Xen pages
2020-03-30 15:27:17 +01:00
amd-ucode-container.txt
docs, amd_ucode: condense amd_ucode notes
2014-10-16 10:07:56 +02:00
block-scripts.txt
hotplug/FreeBSD: document disk hotplug interface
2016-04-06 15:50:45 +01:00
console.txt
xen/arm: vpl011: Update documentation for vuart console support
2017-10-03 15:23:38 -07:00
crashdb.txt
build: convert crash_debug to Kconfig
2016-06-08 14:09:16 +02:00
distro_mapping.txt
Config.mk: Remove unused setvar_dir macro
2019-12-13 16:30:34 +00:00
dump-core-format.txt
dump-core: update the documentation
2009-01-15 12:40:48 +00:00
efi.pandoc
docs/markdown: Switch to using pandoc, and fix underscore escaping
2019-01-02 17:50:36 +00:00
grant-tables.txt
gnttab: split maptrack lock to make it fulfill its purpose again
2017-08-15 15:07:25 +02:00
hvm-emulated-unplug.pandoc
docs/markdown: Switch to using pandoc, and fix underscore escaping
2019-01-02 17:50:36 +00:00
kconfig-language.rst
xen: Update Kconfig to Linux v5.4
2020-01-30 11:54:33 +00:00
kconfig-macro-language.rst
xen: Update Kconfig to Linux v5.4
2020-01-30 11:54:33 +00:00
kconfig.rst
xen: Update Kconfig to Linux v5.4
2020-01-30 11:54:33 +00:00
kexec_and_kdump.txt
kexec: provide user friendly option for memory limit
2017-06-09 14:11:37 +02:00
libxl_memory.txt
docs: initial documentation for xenstore paths
2012-10-01 17:54:11 +01:00
livepatch.pandoc
docs etc.: https: Fix references to other Xen pages
2020-03-30 15:27:17 +01:00
netif-staging-grants.pandoc
docs/misc: add netif staging grants design document
2017-10-05 09:27:25 -04:00
printk-formats.txt
xen/vsprintf: Introduce %*pb[l] for printing bitmaps
2018-10-22 13:39:22 +01:00
pv-drivers-lifecycle.pandoc
docs/markdown: Switch to using pandoc, and fix underscore escaping
2019-01-02 17:50:36 +00:00
pvcalls.pandoc
docs etc.: https: Fix references to other Xen pages
2020-03-30 15:27:17 +01:00
pvh.pandoc
x86/pvh: drop v2 suffix from pvh.pandoc
2020-02-25 17:21:45 +00:00
qemu-backends.txt
docs: add misc/qemu-backends.txt
2016-04-20 18:59:11 +01:00
status-override-table-spec.fodt
docs: convert STAO from odt to fodt
2017-02-15 11:40:16 -08:00
stubdom.txt
docs etc.: https: Fix references to wiki.xen[project].org
2020-03-30 15:27:06 +01:00
support-matrix-head.html
docs: Provide support-matrix-generate, to generate a support matrix in HTML
2018-04-12 16:13:49 +01:00
vtd-pi.txt
VT-d Posted-intterrupt (PI) design
2015-12-10 13:11:25 +01:00
vtd.txt
docs etc.: https: Fix references to wiki.xen[project].org
2020-03-30 15:27:06 +01:00
vtpm-platforms.txt
vtpmmgr: use XSM label as vTPM kernel hash
2014-04-23 11:58:26 +01:00
x86-xenpv-bootloader.pandoc
docs/markdown: Switch to using pandoc, and fix underscore escaping
2019-01-02 17:50:36 +00:00
xen_config.html
tools: vnet: Remove
2011-03-25 21:59:20 +00:00
xen-command-line.pandoc
x86/pv: Options to disable and/or compile out 32bit PV support
2020-04-29 21:13:00 +01:00
xen-env-table-spec.fodt
docs: convert XENV from odt to fodt
2017-02-15 11:40:37 -08:00
xen-error-handling.txt
docs: Add description of BUILD_BUG_ON().
2008-12-04 16:36:43 +00:00
xenmon.txt
docs: Move misc README's into docs/misc/
2015-08-27 19:14:17 +01:00
xenpaging.txt
docs: update xenpaging.txt
2012-08-30 17:57:31 +01:00
xenstore-paths.pandoc
docs etc.: https: Fix references to other Xen pages
2020-03-30 15:27:17 +01:00
xenstore-ring.txt
xenstore: extend the xenstore ring with a 'closing' signal
2014-10-08 14:29:08 +01:00
xenstore.txt
docs etc.: https: Fix references to wiki.xen[project].org
2020-03-30 15:27:06 +01:00
xl-psr.pandoc
docs/markdown: Switch to using pandoc, and fix underscore escaping
2019-01-02 17:50:36 +00:00
xsm-flask.txt
docs etc.: https: Fix references to other Xen pages
2020-03-30 15:27:17 +01:00